Issued Patents All Time
Showing 51–75 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5262874 | Method and apparatus for recording and replaying field-length-modulated video signals | — | 1993-11-16 |
| 5130810 | Method and apparatus for processing a video signal so as to prohibit the making of acceptable videotape recordings | — | 1992-07-14 |
| 5058157 | Method and apparatus for encrypting and decrypting time domain signals | — | 1991-10-15 |
| 4937679 | Dual deck video recording apparatus having enhanced copy protection and method for providing enhanced copy protection to such a recording apparatus | — | 1990-06-26 |
| 4916736 | Method and apparatus for encrypting and decrypting time domain signals | — | 1990-04-10 |
| 4907093 | Method and apparatus for preventing the copying of a video program | — | 1990-03-06 |
| 4819098 | Method and apparatus for clustering modifications made to a video signal to inhibit the making of acceptable videotape recordings | — | 1989-04-04 |
| 4695901 | Method and apparatus for removing pseudo-sync and/or agc pulses from a video signal | — | 1987-09-22 |
| 4631603 | Method and apparatus for processing a video signal so as to prohibit the making of acceptable video tape recordings thereof | — | 1986-12-23 |
| 4626890 | Method and apparatus for removing phase modulation from the color burst | — | 1986-12-02 |
| 4598235 | Method and apparatus for eliminating lag in photoelectric tubes | — | 1986-07-01 |
| 4577216 | Method and apparatus for modifying the color burst to prohibit videotape recording | — | 1986-03-18 |
| 4540919 | Method and apparatus for automatically controlling highlight effects | — | 1985-09-10 |
| 4521736 | Demodulator for pulse width modulated signals | — | 1985-06-04 |
| 4503466 | Apparatus and method for generating optimizing pictures under low light conditions | — | 1985-03-05 |
| 4404499 | Circuit for minimizing edge hooking in television camera pickup tubes | — | 1983-09-13 |
| 4360747 | Voltage controlled subcarrier phase shifter | — | 1982-11-23 |
| 4354243 | Two dimensional interpolation circuit for spatial and shading error corrector systems | Joseph L. Corkery | 1982-10-12 |
| 4333108 | Apparatus and method for transmitting a pulse width modulated audio signal on a video signal | Ronald Quan | 1982-06-01 |
| 4331980 | Circuit and method for automatically setting the beam currents in a video camera | — | 1982-05-25 |
| 4314184 | Deflection coil driver apparatus | — | 1982-02-02 |
| 4312014 | Input video processor for color television cameras | — | 1982-01-19 |
| 4309723 | Apparatus and method for registration and shading of color television cameras | Joseph L. Corkery, Edward P. Sudyka, Gerow D. Brill, Anne M. Reagan, James R. Holzgrafe | 1982-01-05 |
| 4284960 | Photo-feedback preamplifier circuit | — | 1981-08-18 |
| 4249202 | Circuit for frequency selective coring of a video signal | Vinson R. Perry | 1981-02-03 |